Buttonhole-finishing machine.



' No. 724,468. PATENTED APR. 7, 1903.

F. L. HARMON. BUTTONHOLE FINISHING MACHINE,

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"WMW *l i hl No. 724,468. PATENTED APR. 7, 1903.

F. L. HARMON. BUTTONHOLE FINISHING MACHINE.

APPLICATION FILED JAN. 28, 1898.

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' UNITED STATES PATENTJ OFFICE.

FRANK HARMON, 0F BEVERLY, MASSACHUSETTS.

BUTTONHOLE-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 724,468, dated April7, 1903. Application filed January 28, 1898. Serial No. 668.363. (Nomodel.)

To all whom, it may concern.-

Be it known that I, FRANK L. HARMON, of Beverly, in the county of Essexand Commonwealth of Massachusetts, have invented a new and usefulTrimming-Machine, of which the following is a specification.

This invention is specifically stated as being embodied in a novelcombination of de-' vices comprising a trimmingdevice and alsocomprising-a novel mechanism whereupon the trimming device is vibratedback and forth, entering between and passing out from between a materialand a line of thru ms secured to one side of the material at intervalsand loose between the intervals, and is caused to cut the line of thrumsoff from the material, and also a mechanism whereupon the ma-. terial ismoved and the line of thrums is carried in the direction in which theline of thrums extends while the line of thrums is being cut 0E, allunited so as to cooperate to produce a unitary function and result bytheir united action. The trimming device employed is of old constructionand is a pair of com mon shears comprising two shear-' blades and aspring whereupon the shearblades are held together with a yieldingpressure. No novelty Whatever resides in said shears, the same beingsubstantially a duplicate of a pair of common sheep-shears of greatantiquity, which also comprises twoshearblades and a spring whereupontheyare also held together with a yielding pressure. The mechanismwhereupon the material is moved and the thrums carried is also old, thesame being substantially a" part of the mechanism of a \Villcox do Gibbssewing-machine. The shears or cutting device being old and the part ofthe mechanism of the Willcox & Gibbs sewing-machine being also old whenregarded separately disclose no novelty, but when they are combined inthe combination of devices forming the organization of the novel machine made the subject of thisinvention they are parts of the novelcombination and the mechanism thereof.

Having revealed just what this invention consists of in as specific andunmistakable manneras possible, attention is now called to the brief anddetailed description of the accompanyin g drawings in the fulldisclosure of the construction and combination of the in Fig. 5.

parts Of this novel machine, in which other novel features will appear.v

I In the accompanying drawings, Figure 1 is a perspective view of thistrimming-machine, and Fig. 2 is an end elevation of the same. Fig. 3shows a block upon which a pair of shears are to be movably mounted.Figs. 4: and 5 show the blades of a pair of shears to be mounted uponthe block shown in Fig. 3;

and Fig. 6 shows in section the shear-blades assembled and mounted uponthe block shown in Fig. 3, which block is shown in section in Fig. 6 asmovably mounted upon a work-support.

The work-support D is shown in full in Figs.

1 and 2. A section of the work-support D is shown in Fig. 6. In Fig. 3the block a is shown. In Fig. 6 the block a is shown in section, and theshears are shown in section, movably mounted thereon, and the block a isshown as movably secured to said worksupport, so that said block may beeasily moved back and forth upon .said work-support, thereby moving thescrews (1 and d, rigidly secured in said block, in the section of theslots shown in said Work-support. will be understood that the devicesare shown in section in Fig. 6 to showhow that the block a (shown inFig. 3) is'movably mounted upon the work-support D. (Shown in Figs. 1and 2.)

in said hole in said shear-blade a, is firmly.

secured into the uppermost of the two small holes shown in the block ain Fig. The

shear-blade a. is shown in Fig. 4. Said shear- I blade at is also shownin Fig. 6 in section mounted upon the shearblade a. (Shown in section inFig. 6.) A hole is shown near the end of the shear-blade a in Fig. 4.The screw Q (shown in'Fig. 6,) passed through the spring a and fittedloosely in said hole in said shear-blade a, is firmly secured in andpassed through the second hole (shown in Fig. 5) from the largeroundedend of the shear-blade Ct. The screw (it is secured in said hole in saidshear-blade aby the check-n ut d on the screw a". The check-nut d, bywhich the screw (1 is secured in said hole, is shown inserted into thelarge hole. (Shown in the section of the block a in Fig. 6 and shown inthe center of the block 011 i" Fig. 3.) The check-nut d being about aslarge as the large hole prevents a lateral movement of the shears uponthe block a The spring'a on the screw a is to allow the points of theshear-blades a and or (shown in section in Fig. 6) to bemechanicallyraised from the top side of the work-support D against thestress of the spring a, into a proper elevation to trim thrums 01f froma material regardless of the thickness of the material or into theposition in which they are shown in Fig. 2. The spring a upon the screwa is to hold the cutting edges of the shear-blades a and a togetheryieldingly, so that they may cut properly.

Having shown by Fig. 6 that the block a (shown in Fig. 3) is movablysecured to the work-support D, (shown in Figs. 1 and 2,) so that theblock maybe moved back and forth upon said work-support, thereby movingthe screws 61 and (1 (shown in Fig. 6) in the slots in saidwork-support, thereby carrying the shears back and forth bodily by theblock a and how that the shears are movably mounted upon the block 01,in such a manner that the points of the shears may be mechanicallyraised from the top of the work-support D, and that the shears areprevented from being moved laterally upon the block of, and that thecutting edges of the shear-blades are held together yieldingly, so thatthey may cut properly, attention is now called to these devices. (Shownin Figs. 1 and 2.) InFigs. 1 and 2 the shears comprising theshear-blades a and a are shown mounted upon the block a as shown in Fig.6, and the block a is shown movably secured to the work-support D, alsoas shown in Fig. 6. In Fig. 2 the points of the shear-blades a and a areshown in a raised position against the stress of the spring a. (Shown inFigs.'6 and 1.) In Fig. 1 the shear-blade a is shown projecting over thepresser-foot b and in the end of the shearblade a is shown an adjusting-screw a", which is forced against the presser-foot b on accountof the spring at on the screw a. By adjusting the adjusting-screw a" byhand the points of the shears may be raised against the stress of thespring a to about one sixty-fourth of an inch above the bottom of thepresser-foot b and the screw may be secured in the shearblade a by thecheck-nut on the screw. In Fig. 2 the presser-foot b the presser-bar b,socured thereto, the screw 0, fastin the presserbar I), and the block 0(shown by dottedlines,)

fast to said screwand in a hole (shown by dotted lines) in the end ofthe arm A, are shown held in a raised position against the stress of thespring 0 in said hole above said block on account of the cam-lever b,resting on the arm A and movably secured to the screw b fast in thepresser-bar 1). Before the material with the thrumsthereon is moved inpractice by the feeding device 19 (shown in Figs. 1 and 2) the cam-leverZ) (shown in Figs. 1 and 2) is pushed over by the operator, allow ingthe spring 0 (shown in Fig. 2) to cause the presser-foot b to be forceddown against the feeding device b whereupon the spring a upon the screwa causes the points of the shear-blades a and a to follow thepresserfoot downward. In Figs. 1 and 2 the feeding device b is shown inthe position that it is in in practice just after the material'has beenmoved. In Fig. 1 the cam C is shown in the position that it is in inpractice when it is just beginning to cause devices to move for-.

ward to out the thrums off from the material.

The operation of the machine is explained by Figs. 1 and 2, as follows:A material is placed with the thrums up in front of the presser-footwhile said presser-foot is down against the feeding device 11 asaforesaid, so that the end of the line of thrums to be cut or trimmedfrom the material may be fed or moved under the presser-foot b at thenotch 12 therein on accountof the feeding device 12 It matters not aboutthe thickness of the material, for the presserfoot 6 is forced upward bythe material while said material is being moved under the presser'footby the feeding device, and the points of the shear-blades a and a. areautomatically raised by the presser-foot, acting against the screw or inthe shear-blade a against the stress of the spring a on the screw a,into a proper position to shear thrums off from the material regardlessof the thickness of the material. The automatic raising of theshearblades by a device actuatedby the material is one of the importantnovel features of this invention. As will be plain by Fig. 1, the

driving-pulley B, the shaft 13', and the cam O are turned in practice byturning the driving-pulley, and the cam C forces the roll a on the studa and the stud a, fast in the block a which is movably connected withthe work-support D, as described and shown in Fig. 6, and movesthe blocka upon which is mounted the shears comprising the shearblades a and a,as described, and forces the points of the shears while they'are open,as shown in Figs. 1 and 2, between the thrums and the material andacross the line in which the thrums-are moved, which expands the springa fast to the stud a in the block a and also fast to the stud a in thework-support D, and forces the cam-face a (shown also in Fig. 4 on theshear-blade ct) against the stud a (shown fast in the work-support D inFigs. 1 and 2, the position of which is shown in Fig. 4,) which forcesthe cutting edge of the shear-blade a to shear past the cutting edge ofthe shear-blade a, while the spring a is holding the cutting edges ofthe shear blades together yieldingly to cause them to cut properly andcauses thejspring a, fast to the stud a in the shear-blade a and alsofast to the stud a in the shear blade a, to be expanded, whereupon theroll a is released by the cam O, whereupon the spring a pulls the blocka with the shears thereon, in the opposite direction and causes the rolla 'to follow the face of the cam 0, thus causing the points of "theshears'to be pulled out from between the thrums, and the materialthereby moving the camface or (shown in Fig. 4 on the shear-blade a)away from the stud a thereby allowing the spring a to open the points ofthe shears as far asthe stud a (shown in Fig. 1 in the shear-blade a.)admits or into the position in which said shear-blade I is shown inFig. 1. The moving'of the shears or device for cutting the thrums fromthe material back and forth across the line inwhich the thrums are movedand between the thrums and the material is also an important novelfeature of this invention, and the holding of the shear-blades togetheryield ingly is an important construction of this invention, but is notin itself novel. On account of rapid rotations of the driving-pulley Bthe points of the shears are rapidly vibrated back and forth across theline in which the thrums are moved, entering betweenand passing out frombetween the thrums and the material, and are caused .to cut the thrums,while between the thrums and the material direction of the length ofthe line of thrums by moving the materialis trimmed from the material.The feeding mechanism is old; but any old feeding mechanism could beused withthe rest of the combinations herein described withoutinvention.

At the left-hand side of Fig. 2 below the work-support D the screw 6 isshown fast in the frame of the machine. Upon this screw is shown thesleeve e which has two sides flattened, so that the slotted end of thefeeding-device carrier e may slide upon said flattened surfaces and mayrock the sleeve upon' the screw, but cannot slip sidewise on account ofthe sides of the sleeve being flattened.-

- Upon the feeding-device carrier 6 the feed:

ing device b is secured. Upward motion is imparted to the feeding-devicecarrier e and the feeding device b securedthereto, by the eccentric d onthe shaft B. This eccentric also moves the lever d pivoted on the screw0 to compress the spring c inthe hole in the feeding device carrier e byforcing said spring against the sleeve 6 on the screw e, which springmoves the feeding-device carrier e and feeding device b back to theright, while the feeding-device carrier and feeding device are forced bythe' spring 6 to follow the eccentric downward; In the end of thefeed-controller d is shown the slot (1 in which is shown the stud (ifast to the lever 5 which lever is pivoted to the frame A by the screw dand is held in position by the friction-washer 01 To shorten the strokeof the feeding device b the lever b (shown in Fig. 2) maybe raised bylifting the handle b thereof by hand, and the feed-controller d and thepoint 01 secured thereto, will thereby be moved nearer to the pivotalscrew (1 of the leverd, where the lever 01 has less movement, by thestud d acting in the slot (1 of the feed-controller d Having preciselydescribed this invention, I claim- 1. Atrimming-machine comprising thefollowing instrumentalities, viz: a work-support; a presser-foot; meanswhereupon the presser-foot is movably supported; a springwhereupon thepresser-foot is forced yieldingly against one side.of a material havingthrums thereon; a feeding device; means whereupon the feeding device ismovably supported; means whereupon the feeding device is moved againstthe material to move the material and carry the thrums so that they maybe trimmed-; a deviceto be moved back i and forth for trimming thrums;means whereupon the device for trimming thrums is movably su pported;means whereupon the device for trimming thrums is carried back and forthacross the line in which the thrums are carried, and is forced betweenthe thrums and the material, and is forced to trim the thrums near tothe material without cutting the ma- 7 terial, and'is forced out frombetween the thrums and the material.

2. A trimming-machine comprising the fol.- lowing instrumentalities,viz: a: work-support; a presser-foot; means whereupon the presser-footis movably supported; a spring whereupon the presser-foot is forcedyieldingly against one side of a material having thrums thereon; afeeding device; means whereupon-the feeding device is movably supported;means whereupon the feeding device is moved against. the material tomove the material and carry the thrums so that they may be trimmed; adevice to be moved back and forth for trimming thrums means whereuponthe device for trimming thrums is movably supported; means whereupon thedevice for trimming thrums is carried back and forth across the line inwhich the thrums are CERF ried, and is forced between the thrums and.

terial, and is forced out from between the.

thrums and the material; means whereupon the device for trimming thru msmay be automatically elevated on account of the thickness of thematerial, into a proper elevation to trim thrumsnear to the material.

3. A trimming-machine com prising the following instrumentalities, viz:a work-support; a presser-foot; means whereupon the presser-foot ismovably supported; a spring whereupon the presser-foot is forcedyieldingly against one side of a material having thrums thereon; afeeding device; means whereupon the feeding device is movably supported; means whereupon the feeding device is moved against thematerial to move the material and carry the thrums so that they may betrimmed; a device comprisimg two shearblades, to be moved back and forthfor trimming thrums; means whereupon the device for trimming thrums ismovably supported; means whereupon the device for trimming thrums iscarried back and. forth across the line in which the thrums are carried,and is forced between the thrums and the material, and is forced to trimthe thrums near to the material without cutting the material, and isforced out from between the thrums and the material; means whereupon thedevice for trimming thrums may be automatically elevated on account ofthe thickness of the material, into a proper elevation to trim thrumsnear to the material; means for holding the shear-blades togetheryieldingly, so that they may cut properly.

4. A trim ming-machine comprising the following instrumentalities, viz:a pair of shears comprising two shear-blades; means whereupon the shearsare movably supported;

means whereupon the shears are automatically moved out of their normalposition while the points ofthe shear-blades are apart, and into aproper position to trim a thrum near to a material without cutting thematerial;

means whereupon the points of the shears may be automatically forcedtogether to trim a thrum; means whereupon the shears may beautomatically moved back into their normal position.

5. A trimming-machine comprising the following instrumentalities, viz: apair of shears comprising two shear-blades; means for holding theshear-blades together yieldingly, so

- that they may trim properly; means whereupon the shears are movablysupported ;means whereupon the shears are automatically moved out oftheir normal position while the points of the shears are apart, and intoa position to trim a thrum near to a material without cutting thematerial means whereupon the points of the shears may be automaticallyforced together-to trim a thrum; means whereupon the shears maybeautomatically moved back into their normal position.

6. A trimming-machine comprising the following instrumentalities, viz: apair of shears comprising two shear-blades; means where upon 'the shearsare movably supported; means whereupon the shears may be held on accountof the thickness of thematerial, into a proper elevation to trim a thrumnear to the material without cutting the material; means whereupon theshears may be automatically moved out of their normal position while thepoints of the shear-blades are apart, and into a proper position to trima thrum near to the material; means whereupon the points of the shearsmay be automatically forced together to trim a thrum; means whereuponthe shears may be automatically moved back into their normal position.

7. A trimming-1n achine comprising the following instrumentalities, viz:a pair of shears comprising two shear-blades; means for holding theshear-blades together yieldingly, so that they may trim properly; meanswhereupon the shears are movably supported; means whereupon the shearsmay be held on account of the thickness of the material, into a properelevation to trim a thrum near to the material without cutting thematerial; means whereupon the shears may be automatically moved out oftheir normal position while the points of .the shear-blades are apart,and into a proper position to trim a thrum near to the a material; meanswhereupon the points of the shears may be automatically forced togetherto trim a thrum means whereupon the shears may be automatically movedback into their normal position,

8. A trimming-machine comprising the following instrumentalities, viz: apair of shears adapted to trim a thrum and adapted to be automaticallyoperated; means whereupon a material may be moved to carry thrumssecured to said material toward said shears;

means whereupon said shears may be auto- 7 matically operated.

FRANK L. HARMON. Witnesses:

ARTHUR L. AVERILL, WILLIAM H. HUNT.

